spray foam in the roofing industry—nrca’s point of vie update.pdf · topics •astm standards...
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Spray foam in the roofing
industry—NRCA’s point of view
James R. Kirby, AIA
Associate Executive Director, Technical Communications
National Roofing Contractors Association
Spray Foam 2009Austin, TX
January 2009
Topics
• ASTM standards
• ICC code development
• The NRCA Coating Manual, 2009 Edition
• The green/sustainability movement
• The NRCA Roofing Manual
ASTM standards
• C1029—SPF for insulation (1985, 2008)
• D5469—Application (1993, 2005)
• D7119—Sampling (2007)
• D7425—SPF for roofing applications (2008)
• 2 new standards in the last couple years
2 SPF material standardsComparison of ASTM Standards for SPF
Property: C1029, Type III D7425, Type I
Scope Thermal insulation Roof systems
Classifications: Types I, II, III and IV – based on compressive
strength
Types I and II – based on R-value
R-value, min 6.2 5.6
Compressive strength, psi, min 40 40
Density, lb/ft3, min ** 2.5
Water vapor permeability,
perm-inches, max
3.0 3.02
Water absorption, volume %,
max
5 5
Tensile strength, psi, min 42 40
Response to thermal and humid
aging, linear change %,
max
(Dimensional stability)
6 6
Closed cell content, %, min 90 90
Surface burning characteristics Report value **
** Not included
Duplication• There are 2 material standards for SPF.
• They both were (re)approved in 2008; we will have 2 material
standards for 7 more years.
• ICC recognized—2012?
• SPFA recognized—??
• NRCA recognized—2012?
• AIA, RCI, CSI recognized—?? Likely when included in IBC/IRC.
• Specifiers and installers need to recognize the potential conflicts—
and potential legal ramifications.
Sampling standard• D7119 (2007)
• Scope: – Removal in field for examination of existing and QA
for new installations.
– Describes types and purpose of sample cuts, visual inspection techniques, lab tests and repair or samples cuts.
• Essentially matches current guidelines in NRCA/SPFA QC document.
• I fear misunderstanding will lead to incorrectly specifying it’s use and, therefore, it’s misuse.
ICC
• Proposal submitted to ICC re: SPF types.– Currently required to meet C1029 Type III
– Proposed to add Type IV
• The proposal was ―…Type III and Type IV.‖
• In code ―speak‖, this means all SPF would be required to meet both, so all SPF would be required to have 60 psi compressive strength.
• NRCA attended and caught this. It was changed to ―…Type III or Type IV.‖ Now you have a choice!
The NRCA Coating Manual
• Available February 2009
• Intended to be a document for contractor
• Scope is limited to the most common coatings
and their application
• Coatings used with SPF roof systems:
– Acrylic
– Polyurethane
– Polyurea
– Silicone
The NRCA Coating Manual
• Coating substrate groups– Metal
– Bituminous
– Single-ply
– SPF
• Substrate and Surface Evaluation chapter– SPF
– Recoating Existing Coatings
The green/sustainability movement
• Durability/longevity
• Insulation (conservation)
• Reduction of solar gain
• Reflectivity (surface issue)
• Vegetative roofs
• Platform for PVs (energy generation)
The green/sustainability movement
• It seems the SPF industry is well positioned to be an active participant in the green/sustainability movement from both the roofing and wall insulation segments of the industry.
• Manufacturer’s should provide specifiers and installers accurate and appropriate information needed to meet/exceed the requirements and intent of the ―green‖ rating systems.
• Rating Systems:– USGBC’s LEED
– GBI’s Green Globes
2008 Manual—SPF Highlights
• Hard copy, CD-ROM and on-line
• Hard copy is free with paid 2008 NRCA membership
• CD-ROM contains:
– The NRCA Roofing Manual: Membrane Roof Systems—
2007
– The NRCA Roofing Manual: Metal Panel and SPF Roof
Systems—2008
– The NRCA Roofing and Waterproofing Manual—Fifth
Edition with 2003 and 2006 Updates
2008 Manual—SPF Highlights
• Materials
• Design Considerations
• Application
• Roof System Design Guidelines
• Construction Details
– 100 Construction Details; 38 for Reroofing
Construction Details
and Introduction
• Set up for easy use as submittal package
• Priority of details—SPF 3 vs. SPF 3A
• Cricket and saddle recommendations
• Discussion of edge-metal uplift resistance
• And much more…
The NRCA Roofing Manual Series
• The NRCA Roofing Manual: Membrane Roof
Systems—2007
• The NRCA Roofing Manual: Metal Panel and
SPF Roof Systems—2008
• The NRCA Roofing Manual: Steep-slope Roof
Systems—2009
• The NRCA Roofing Manual: Architectural Metal
Flashing, Moisture Control and Reroofing—2010
The NRCA Roofing Manual:
Membrane Roof Systems—2007
Chapter 1—Roof decks
Chapter 2—Insulation
Chapter 3—Roof membranes
Chapter 4—Surfacings
Chapter 5—Design guidelines
Chapter 6—Construction details
Appendices
The NRCA Roofing Manual:
Metal Panel and SPF Roof
Systems—2008
--Introduction
--Metal Panel Roof Systems
--SPF Roof Systems
--Appendices
The NRCA Roofing Manual:
Steep-slope Roof Systems—2009
--Asphalt Shingles
--Clay and Concrete Tile
--Slate
--Wood Shingles and Shakes
--Synthetics and Metal Shingles
The NRCA Roofing Manual:
Architectural Sheet Metal,
Reroofing and Moisture
Control—2010
--Architectural Metal Flashing
--Reroofing
--Moisture Control
--Glossary
Fifth Edition:
--Published in 2001
--Updated in 2003
--Updated in 2006
Sections still applicable:
--Architectural Sheet Metal
--Reroofing
--Moisture Control
--Glossary
NRCA Construction Details CD—2009
• CD-ROM contains construction details from:– The NRCA Roofing Manual: Membrane Roof
Systems—2007
– The NRCA Roofing Manual: Metal Panel and SPF Roof Systems—2008
– The NRCA Roofing Manual: Steep-slope Roof Systems—2009
– The NRCA Roofing and Waterproofing Manual—Fifth Edition with 2003 and 2006 Updates. Sheet metal details only.
• AutoCAD format (.dwg)
Additional NRCA Documents
Relevant to SPF
• Manual for Inspection and Maintenance of Sprayed Polyurethane Foam-based Roof Systems: A Guide for Building Owners (NRCA / SPFD, 1998)
• Quality Control Guidelines for the Application of Sprayed Polyurethane Foam Roofing (NRCA / SPFA, 2003)
• A Field and Laboratory Assessment of Sprayed Polyurethane Foam-based Roof Systems (R. Dupuis, 1998)
• Performance of Sprayed Polyurethane Foam Flashings on CD-ROM (R. Dupuis, 2003)
Also…
• The Center—The Center for
Environmental Innovation in Roofing
• NRCA University – online education,
customized training (OSHA 10-hour class)
and accreditation (CEU)
• Future Executive Institute (FEI)
• roofwinddesigner.com
• energywise.specright.net
NRCA University’s Roofing 101 program offers
you an interactive, cost-effective online training
tool to learn roofing fundamentals.
Go to www.nrca.net for a link to Roofing 101
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